Space-liner for matrices



W. R. COZATT.

. SPACE LINER- FOR MATRICES.

APPLICATION FiLED FEB. 4, I919.

Patented Dec. 20,1921.

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WALTER R. GOZATT, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF TO JAMES H. BRADY, OF $AN FRANCISCO, CALIFORNIA.

SPACE-LINER FOR IMATRIGES.

To all whom it may concern Be it known that I, WALTER R. Coza'rr, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Space-Liners for Matrices, of which the following is a specification.

The present invention relates to an improvement in space liners, such as are used in matrices for casting faces in metallic strip material used on a type or slug casting machine and particularly in matrices illustrated and described in my United States Letters Patent, No. 1,298,900, dated April 1, 1919.

In said application is disclosed a compound matrix comprising .a holder having a longitudinal recess, packing pieces extending longitudinally in said recess at its sides, face liners also extending longitudinally in said recess from which to cast the face of strip material, and space liners extending longitudinally therein, interposed between the face liners, and, in some cases, between the face liners and the packing faces.

The object of the present invention is to provide a space liner so formed that the face of the strip material so cast in such a matrix is strengthened or reinforced. It is of especial importancewhere it is desired to cast strip material having a very thin face. When the apparatus disclosed in my patent above referred to is used in casting strip material having a very thin face, such strip material, if made with space liners shown therein, is not sufficiently strong to withstand careless use and may become bent or otherwise damaged, since the thickness of the back part of the strip material is not greater than of the face. Some very thin faces may have a thickness of three or four one-thousandths of an inch, and it is readily seen that a backing of three or four onethousandths ofan inch is not sufficiently strong to withstand any ordinary usage, but that great care has to be taken in using such strip material to prevent deformation thereof.

In the accompanying drawing, Figure l is an enlarged plan view of a matrix of the kind used in my invention and having space liners constructed in accordance with this invention; Fig. 2 is a perspective view of the holder of the matrix without the space liners Specification of Letters Patent. Patgntgd De@, 2@, 1921,, Application filed February 4., 1919. Serial No. 274,881.

and face liners; Fig. 3 is a longitudinal section of Fig. 1; Fig. 4 is a section on the line 44 of Fig. 1; Fig. 5 is a sectionalview of the casting formed by the space liners and face liners assembled as shown .inFig. at; Figs. 6, 7, 8, 9 and 10 are end viewsof space liners constructed in accordance with my invention.

Referring to the drawing, 1 indicates a holder, 2side packing pieces atthe sides of said holder, and 3 face liners therein. All of the above are of the construction already disclosed in my application above referred to.

4 indicates my improved space liners.

These space liners may be of various forms. 4 shows in end view a space liner having two plane casting faces, each making an obtuse angle with its vertical face which is in contact with an adjacent face liner or side packing piece; et shows a space liner which has only single plane casting face; 4. shows also a space liner having a single plane casting face making an obtuse angle with a vertical face but on the other side from 4; 41 shows a space liner having a casting face of a semi-cylindrical form 4? shows one having a casting face of approximately a semielliptical form. In all these forms, the advantage of my improved space liner is that the face of the strip material cast thereby will have a backing of greater thickness than the face.

F ig- 5 illustrates in cross-section strip material 5 cast from the matrix shown in crosssection in Fig. i, and it will be seen that both faces of the strip material 5 have backings of considerably greater thickness than the faces themselves. This is of great importance when it is desired to cast strip material having a line face of a width of three or four one-thousandths of an inch. When such strip material is cast by means of space liners shown in my patent above referred to, in which the face of the space liners was always at right angles to the vertical faces, the faces of said strip material were always of the same width as the thickness of the backing immediately behind the same. When this width is as small as three one-thousandths of an inch, there is great danger of the strip material being bent or broken by ordinary usage and unless great care be exercised. By making the space liners of such form that the backing of the faces of said strip material is stronger than the faces themselves, no such great care need be exercised in handling the strip material to prevent it from being broken or otherwise deformed.

The matrix is formed at one end with an opening sufficiently large to permit the casting made therein to pass lengthwise out of said matrix. In this way, a strip material face of the desired form may be made of any length.

1. A space liner for a matrix for casting strip material faces having a casting face forming at the edge of the printing face of the rule produced by the matrix block an.

obtuse angle with a face thereof adapted to contact with another surface from a point beginning at the apex of said angle when in place in the matrix, the matrix being formed at one end with an opening sufiiciently large to permit the casting made therein to pass lengthwise out of said matrix, whereby a strip material face of the desired form may be made of any length.

, 2. A space liner for a matrix for casting strip material faces having a casting face 'matrix being formed at one end with an opening sufliciently large to permit the casting made therein to pass lengthwise out of said matrix, whereby a strip material face of the desired form may be made of any length.

'- WALTER R. COZATT. 

